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CVE-2026-71492

CVE-2026-71492 · Banks: Path traversal in `DirectoryPromptRegistry.set()` allows arbitrary file write outside the registry root

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Banks generates meaningful LLM prompts using a simple template language. Prior to version 2.4.5, DirectoryPromptRegistry.set() in src/banks/registries/directory.py interpolates attacker-controlled Prompt.name and Prompt.version values into a Path without canonicalization or containment validation. Relative traversal such as ../victim/foo and an absolute Prompt.name can escape or discard the configured registry root, while overwrite=True permits replacement of existing target files. The poisoned name is persisted in index.json and reconstructed by _load(), allowing the out-of-root path to survive later registry loads. An application that forwards request data into these fields can therefore write Prompt.raw bytes to attacker-chosen paths writable by the application process. This issue is fixed in version 2.4.5.

CVSS 6.0 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • banks

    Versions
    • < 2.4.5: Affected

    No fix published

  • banks PyPI

    Versions
    • 0.0.1
    • 0.0.2
    • 0.0.3
    • 0.1.0
    • 0.1.1
    • 0.2.0
    • 0.3.0
    • 0.3.1
    • 0.4.1
    • 0.5.0
    • 0.6.0
    • 1.0.0
    • 1.1.0
    • 1.2.0
    • 1.2.1
    • 1.3.0
    • 1.4.0
    • 1.5.0
    • 1.6.0
    • 1.6.1
    • 1.7.0
    • 1.7.1
    • 1.8.0
    • 2.0.0
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.1.3
    • 2.2.0
    • 2.3.0
    • 2.4.0
    • 2.4.1
    • 2.4.2
    • 2.4.3
    • 2.4.4
    Affected ranges
    • ECOSYSTEM: < 2.4.5

    Update to 2.4.5

Original sources

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